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公开(公告)号:US4521612A
公开(公告)日:1985-06-04
申请号:US659320
申请日:1984-10-10
申请人: Rudolf Soos , Rezso Kolta , Sandor Zoltan , Maria Tary
发明人: Rudolf Soos , Rezso Kolta , Sandor Zoltan , Maria Tary
IPC分类号: C07C69/743 , C07C67/60 , C07C68/08 , C07C69/003 , C07C69/747
CPC分类号: C07C67/60 , C07C2101/02
摘要: The present invention relates to a process for the selective separation of esters of the general formula IIA--COOR.sup.1 IIfrom mixtures containing the cyclopropane carboxylic acid esters of the general formula I ##STR1## in addition to the said esters of the general formula II by reacting the said mixture with an amine of the general formula III ##STR2## when removing the acid amides formed from the esters of the general formula II by washing the mixture with water of removing the esters of the general formula I by distillation.The compounds of the general formula I are the intermediates of herbicides. The requested purity of the herbicides can be achieved if pure intermediates are used.
摘要翻译: 本发明涉及通式IIA-COOR1II的酯与含有通式ⅠI的环丙烷羧酸酯的混合物的选择性分离方法,除了所述通式II的酯 当通过用除去通式I的酯的蒸馏物除去混合物,除去由通式II的酯形成的酸酰胺时,使所述混合物与通式III的胺III反应。 通式I的化合物是除草剂的中间体。 如果使用纯中间体,可以实现除草剂所要求的纯度。
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公开(公告)号:US5153349A
公开(公告)日:1992-10-06
申请号:US601767
申请日:1990-10-19
申请人: Sandor Zoltan , Gyorgy Hidasi , Bela Bertok , Istavan Szekely , Janis Hajimichael , Sandor Botar , Lajos Nagy , Eva Somfai , Istvan Lak , Andras Rapi , Antal Gajary , Agnes Hegedus , Maria Tary
发明人: Sandor Zoltan , Gyorgy Hidasi , Bela Bertok , Istavan Szekely , Janis Hajimichael , Sandor Botar , Lajos Nagy , Eva Somfai , Istvan Lak , Andras Rapi , Antal Gajary , Agnes Hegedus , Maria Tary
IPC分类号: A01N53/00 , C07C255/14
CPC分类号: A01N53/00
摘要: The invention relates to a process for the preparation of such isomer mixtures of cypermethrine of the Formula (I) ##STR1## wherein carbon atoms indicated by 1, 3 and .alpha. stand for a chiral carbon atom and the wavy line indicates cis or trans configuration related to the cyclopropane ring--which contains out of the theoretically possible 8-isomers of cypermethrine at least 95% of 1RtransS and 1StransR (Ib) isomer pair or only a mixture of 1RcisC and 1ScisR (Ia) and the isomer pair (Ib) of the ratio (Ia):(Ib)=55:45-25:75 by asymmetric transformation of second order performed in the presence of an amine base and solvent from a starting cypermethrine isomer mixture which contains next to the isomer pair (Ib) cis and other trans isomers or the isomer pair Ia+Ib at an undesired ratio.
摘要翻译: PCT No.PCT / HU90 / 00006 Sec。 371 1990年10月19日第 102(e)1990年10月19日PCT PCT 1990年1月17日PCT公布。 出版物WO90 / 08132 日本1990年7月26日。本发明涉及一种制备式(I)的氯氰菊酯的异构体混合物的方法,其中由1,3和α表示的碳原子代表手性碳原子 并且波浪线表示与环丙烷环有关的顺式或反式构型,其中含有理论上可能的氯氰菊酯的8-异构体至少95%的1RtransS和1StransR(Ib)异构体对,或仅包含1RcisC和1ScisR(Ia )和通过在胺碱和溶剂的存在下由起始氯氰菊酯异构体混合物进行的二级的不对称转化,比率(Ia):(Ib)= 55:45-25:75的异构体对(Ib)= 55:45-25: 异构体对(Ib)顺式和其他反式异构体或异构体对Ia + Ib处于不期望的比例。
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